What does GIDP stand for in baseball stats?

Double plays initiated by a batter hitting a ground ball (but not a fly ball or line drive) are recorded in the official statistic GIDP (Grounded Into a Double Play), an indicator of one form of batting ineptitude. Should a run score on a play in which a batter hits into a double play (the first-and-third or bases loaded, none-out situation), official rules of scoring deny the batter credit for an RBI, although the batter always gets credit for an RBI on a one-out groundout or a fielder's choice play in which a baserunner scores.